Remove/install front wheel hub

AR33.20-B-0310A

12.02.16

Front axle 732.5 with Vehicle 688.1, 979.2 with CODE BB5 (Disc brakes on front and rear axle)

Front axle 733.8 with Vehicle 688.1, 688.2 with CODE BB5 (Disc brakes on front and rear axle)

B33.20-0017-06

1 Lane ring

2 Radial seal

3 Internal bearing

4 Wheel Hub (with disc)

5 External bearing

6 Thrust washer

7 Lock nut

8 Screw

9 Nut-wheel cap

	Remove
1	Remove front wheels		AR40.10-B-1100F
2	Remove the caliper from the disc
3	Remove the nut-wheel cap (9)
4	Loose the screw (8) and remove the locking nut (7)		*389589001300
5	Remove the stop washer (6)
6.1	Remove the wheel hub (4)		*035589013300
6.2	Remove the internal bearing inner race (3) from the steering knuckle	If the bearing inner race is stuck in the steering knuckle.	*000589453300
7	Remove the bearing outer race (5) from the Wheel Hub (4)		*000589163300
8	Remove the radial seal (2) from the wheel hub (4)
	Check
9	Check friction surface of o seal ring race for wear, replace it, if necessary	The race ring should be replaced by a new one whenever its friction surface shows damage, wear or grooves.	AR33.25-B-0400-09A
	Install
10	Install the race ring	Only in case of replacement.	AR33.25-B-0400-09A
11.1	Apply grease to the internal bearing (3) and to the friction surfaces of radial seal (2) and race ring (1)
11.2	Install the internal bearing inner race (3) and radial seal (2) in the wheel hub (4)	Install a new radial seal.
12	Install the wheel hub (4) in the steering knuckle	Be careful when installing not to damage the radial seal or the steering knuckle thread .	AR33.20-B-0310-04B
			*309589071500
			*055589004300
13	Install the external bearing (5)	Lubricate the external bearing and fill the wheel hub with the amount of grease recommended.
			*BF33.20-B-1001-01A
14	Install the stop washer (6)
15	Install the locking nut (7) and adjust the hub axial slack	When tightening the nut, turn the hub continually.	AR33.20-B-0300A
			*BA33.20-B-1004-01B
16	Tighten the screw (8)		*BA33.20-B-1005-01B
17	Install the nut-wheel cap (9)	Supply the nut wheel cap with the amount of grease recommended.
			*BF33.20-B-1002-01A
			*BA33.20-B-1003-01B
18	Install the caliper from the disc
19	Install the front wheels	 After running the first 50 to 100 Km, re-tighten the wheels fastening nuts.	AR40.10-B-1100F
		Vehicle 688	*BA40.10-B-1001-03B
		Vehicle 979	*BA40.10-B-1001-03A

Wheel location, wheel hub

Número	Denominação				Front axle 732.51; 732.560/561/562; 733.82/84/88	Front axle 733.880


BA33.20-B-1003-01B	Cap nut	Only in vehicles with threaded hubcap	M90x1.5	Nm	150	150
		Only in vehicles with threaded hubcap	M80x1.5	Nm	-	-
		Only in vehicles with threaded hubcap	M70x1.5	-	-	-
BA33.20-B-1004-01B	Nut with lock screw		M24x1.5	Nm	60	60
			M40x1.5		-	-
BA33.20-B-1005-01B	Lock screw		M8	Nm	30	30
			M10		-	-

Disk wheels

Número	Denominação			Chassis 979


BA40.10-B-1001-03A	Nuts with integrated washer - wheel hub centering	M18x1.5	Nm	320
		M22x1,5	Nm	-

Disk wheels

Número	Denominação				Chassis 688.1/2, 398.2


BA40.10-B-1001-03B	Wheels nuts	Plain nuts from 02/01/2012 - hub centering	M18x1.5	Nm	320
		Tapered nuts 31/12/2011 - centering by washers	M18x1.5	Nm	250

Wheel hub, hub cap

Número	Denominação			Front axle 732.510	Front axle 732.560/561


BF33.20-B-1001-01A	Wheel hub grease (per hub)	Replenishment quantity	Grams	80	150
BF33.20-B-1002-01A	Hubcap grease	Replenishment quantity	Grams	-	40

Wheel hub, hub cap

Número	Denominação			Front axle 733.840/880/882


BF33.20-B-1001-01A	Wheel hub grease (per hub)	Replenishment quantity	Grams	100
BF33.20-B-1002-01A	Hubcap grease	Replenishment quantity	Grams	30